Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Effective Income Tax Rate, Percent	21.20%	(0.70%)
Valuation Allowance [Abstract]
Valuation Allowance, Amount	$ 0		$ 0
Income Tax Uncertainties [Abstract]
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	3,500		3,600
Unrecognized Tax Benefits, Period Increase (Decrease)	(100)	$ (1,200)
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	900		$ 1,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	(100)	$ (800)
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance beginning of period	4,585
Additions based on tax positions related to current year	406
Additions for tax positions of prior years	124
Reductions for tax positions of prior years	(60)
Reductions due to lapse of applicable statute of limitations	(533)
Settlements	(60)
Balance end of period	4,462
Maximum [Member]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Lower Bound	1,100
Minimum [Member]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Lower Bound	$ 100